le baratineur

smooth talker, sweet-talker

b a . ʁ a . t i . n œ ʁ
baratin to sweet-talk, to deceive with smooth talk + eur forms nouns denoting an agent, instrument, or quality
noun · masculine Rare #51,519
smooth talker, sweet-talker Colloquial; often implies that the person is talking persuasively but not honestly.
FR: Ne l'écoute pas, c'est un baratineur.
EN: Don't listen to him; he's a smooth talker.

Baratineur !

Smooth talker!

— 2046 (2004)

Sameer, tu es un baratineur.

Sameer, you're a smooth talker.

— Mon cœur est déjà pris (1999)

Ça va, ça va, vieux baratineur.

Okay, okay, you old windbag.

— L'Empire contre-attaque (1980)

T'as passé un bon été, baratineur ?

Have you had a good summer, you smooth talker?

— Le Cercle des poètes disparus (1989)